Dual-layer light emitting devices based on polymeric Langmuir- Blodgett films

GY Jung, C Pearson, M Kilitziraki, LE Horsburgh, AP Monkman, Ifor David William Samuel, MC Petty

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Poly(2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV) and poly(6-hexylpyridine-2,5-diyl) (PHPY) Langmuir-Blodgett films have been used as emitting layer and electron transporting layer, respectively, in light emitting diodes. The electrical and opto-electrical characteristics of the dual-layer devices have been compared to single layer devices based on MEH-PPV. AC impedance measurements over the frequency range 5 Hz-13 MHz have been used to provide an insight into the electrical equivalent circuit of the devices. The external quantum efficiency of the dual-layer structure was found to be approximately ten times higher than that of the single layer device.

Original languageEnglish
Pages (from-to)163
Number of pages163
JournalJournal of Materials Chemistry
Volume10
Publication statusPublished - 2000

Keywords

  • ORGANIC ELECTROLUMINESCENT DIODES
  • ELECTRON-TRANSPORTING POLYMER
  • IMPEDANCE SPECTROSCOPY

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